Casting cellulose acetate membranes

Abstract

Cellulose acetate membranes are widely used for reverse osmosis and ultrafiltration applications. Cellulose acetate membranes were prepared by solution blending of cellulose acetate with polyurethane in polar solvent. The effect of varied concentrations of additive, polyvinylpyrrolidone, on the performance of modified cellulose acetate/polyurethane blend membranes was studied. The cellulose acetate/polyurethane membranes were characterized based on pure water flux, compaction, water content, morphological studies and applied for proteins separations by ultrafiltration technique and are discussed in detail.